Geomagnetic indices ASY-H and SYM-H and their relation to interplanetary parameters-Reference-Cited by-同舟云学术

Geomagnetic indices ASY-H and SYM-H and their relation to interplanetary parameters

Published:2022-12-24 Issue:4 Volume:8 Page:38-45
ISSN:2712-9640
Container-title:Solnechno-Zemnaya Fizika
language:en
Short-container-title:

Author:

Makarov Georgy¹

Affiliation:

1. Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS

Abstract

The dependences of the geomagnetic indices SYM-H and ASY-H on interplanetary parameters for the period from 1981 to 2015 according to their daily averages are studied. The study is carried out in two ways: the first — the entire data array is analyzed, the second — the data are divided into 9 activity groups in accordance with the average daily values of the planetary geomagnetic index Ap. A correlation analysis of the indices with the solar wind speed, magnitude, and the north-south component of the interplanetary magnetic field (IMF) has been performed. The search for a relationship between the ASY-H and SYM-H indices and interplanetary parameters turned out to be more successful when considering the entire data array than in the case of splitting the data into groups of magnetic activity. Regression equations relating ASY-H and SYM-H to interplanetary parameters are determined. It has been found that when describing the relationship between the ASY-H and SYM-H indices and the IMF north-south component, it is necessary to take into account the contribution of the IMF modulus.

Publisher

Infra-M Academic Publishing House

Subject

General Medicine

Reference28 articles.

1. Вайсберг О.Л., Смирнов В.Н., Застенкер Г.Н. и др. Взаимодействие солнечного ветра с внешней магнитосферой Земли. Плазменная гелиогеофизика. Т. 1 / Под ред. Л.М. Зеленого, И.С. Веселовского. М.: ФИЗМАТЛИТ, 2008. С. 378–422., Akasofu S.-I. Interplanetary energy flux associated with magnetospheric substroms. Planet. Space Sci. 1979, vol. 27, iss. 4, pp. 425–431. DOI: 10.1016/0032-0633(79)90119-3.

2. Ермолаев Ю.И., Лодкина И.Г., Николаева Н.С., Ермолаев М.Ю. Статистическое исследование влияния межпланетных условий на геомагнитные бури. Космические исследования. 2010. T. 48, № 6. C. 499–515., Alexeev I.I., Belenkaya E.S., Kalegaev V.V., Feldstein Y.I., Grafe A. Magnetic storms and magnetotail currents. J. Geophys. Res. 1996, vol. 101, iss. A4, pp. 7737–7747. DOI: 10.1029/95JA03509.

3. Макаров Г.А. Смещения значений геомагнитных индексов магнитосферного кольцевого тока. Солнечно-земная физика. 2021. Т. 7, № 3. С. 31–38. DOI: 10.12737/szf-73202103., Ballif J.R., Jones D.E., Coleman P.J. Further evidence on the correlation between transverse fluctuations in the interplanetary magnetic field and Kp. J. Geophys. Res. 1969, vol. 74, iss. 9, pp. 2289–2301. DOI: 10.1029/JA074i009p02289.

4. Akasofu S.-I. Interplanetary energy flux associated with magnetospheric substroms. Planet. Space Sci. 1979. Vol. 27, iss. 4. P. 425–431. DOI: 10.1016/0032-0633(79)90119-3., Burton R.K., McPherron R.L., Russell C.T. An empirical relationship between interplanetary conditions and Dst. J. Geophys. Res. 1975, vol. 80, iss. 31, pp. 4204–4214. DOI: 10.1029/ja080i031p04204.

5. Alexeev I.I., Belenkaya E.S., Kalegaev V.V., et al. Magnetic storms and magnetotail currents. J. Geophys. Res. 1996. Vol. 101, iss. A4. P. 7737–7747. DOI: 10.1029/95JA03509., Dubyagin S., Ganushkina N., Kubyshkina M., Liemohn M. Contribution from different current systems to SYM and ASY midlatitude indices. J. Geophys. Res. 2014, vol. 119, pp. 7243–7263. DOI: 10.1002/2014JA020122.